servo/components/net_traits/blob_url_store.rs
2016-06-17 20:06:37 +08:00

53 lines
1.7 KiB
Rust

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use ipc_channel::ipc::IpcSender;
use std::str::FromStr;
use url::Url;
use uuid::Uuid;
/// Errors returns to BlobURLStoreMsg::Request
#[derive(Clone, Serialize, Deserialize)]
pub enum BlobURLStoreError {
/// Invalid UUID key
InvalidKey,
/// Invalid URL origin
InvalidOrigin,
}
#[derive(Serialize, Deserialize)]
pub enum BlobURLStoreMsg {
/// Add an entry and send back the associated uuid
/// XXX: Second field is an unicode-serialized Origin, it is a temporary workaround
/// and should not be trusted. See issue https://github.com/servo/servo/issues/11722
AddEntry(BlobURLStoreEntry, String, IpcSender<Result<String, BlobURLStoreError>>),
/// Delete an entry by uuid
DeleteEntry(String),
}
/// Blob URL store entry, a packaged form of Blob DOM object
#[derive(Clone, Serialize, Deserialize)]
pub struct BlobURLStoreEntry {
/// MIME type string
pub type_string: String,
/// Some filename if the backend of Blob is a file
pub filename: Option<String>,
/// Size of content in bytes
pub size: u64,
/// Content of blob
pub bytes: Vec<u8>,
}
/// Parse URL as Blob URL scheme's definition
/// https://w3c.github.io/FileAPI/#DefinitionOfScheme
pub fn parse_blob_url(url: &Url) -> Option<(Uuid, Option<&str>)> {
url.path_segments().and_then(|mut segments| {
let id_str = match (segments.next(), segments.next()) {
(Some(s), None) => s,
_ => return None,
};
Uuid::from_str(id_str).map(|id| (id, url.fragment())).ok()
})
}